The Flowers are deep metallic blue and the flowering period is exceptionally long.
![Weigela Magical® Rainbow at Plandorex.com](http://www.plandorex.com/fichiers/images/Miniatures%20vari%C3%A9t%C3%A9s/Corydalis%20Blue%20Line%C2%AE%20couriblue/Corydalis%20Blue%20Line%20%C2%AE%20couriblue.jpg)
Unlike most Corydalis varieties currently available, BLUE LINE® is easy to grow and genuinely perennial. It needs a fertile , humus rich and moist but well drained soil. The plant is fully hardy and does not require any pruning.